Improved valve for type-casting machines



INrrnD STATES PATENT Critics.

iMPROVED VALVE FOR TYPE-CASTING MACHINES.

Specification forming part of Letters'Patcnt No. 15,386, dated July 22, 1856.

To all whom it may concern,.-

Beit known that I, EDWARD PELOUZE, Jr., of the city and county of Philadelphia and State oi' Pennsylvania, have invented certain new and useful Improvements in Machines for Casting Type; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, in which- Figure 1 represents a perspective view of the machine, and Fig. 2 represents a vertical longitudinal section taken through the center of the more immediate operative parts of the machine.

The nature of my invention relates to the combination of a self-acting valve with the v nipple of type-casting machines, which by its peculiar construction and operation regulates the flow of metal to the well, as well as' its exit through the nipple, and works in concert with the plunger in the well.

To enable others skilled in the art to make and use my invention, I will proceed to describe the samewith reference to the drawings.

The machine in construction resembles those in common use; and my invention can be readily added to the present form of machines for casting type with but little expense.

It is unnecessary to describel the process of casting type by means of a pump, as it is well known, and Ildo not allege to have changed the general principle involved in such machines, but have so improved upon the details of the operation as to remove the most serious objections incident to it-viz., the chilling of the metal at the point of or within the nipple, the reaction upon the metal, which spirts out metal at improper periods, and the entire prevention of the sticking or clogging of the valve or stem in the nipple by leaving them lfree to move to the volume or force of the metal passing through the ducts.

A represents the bath of metal or meltingpot, of the usual form, in which the type- Inetal is kept hot by a furnace underneath it.

In this pot is a well, B, of cylindrical form,

in which a plunger, C, is made to work by means of a lever, D, which has its fulcrum in the standard E, and to one end of which lever the rod F of the plunger is attached. The plunger C is solid-that is to say, it has no valve or opening i-n it-and acts as a pistonhead in a cylinder.

The well B is formed in a solid piece of metal of a reversed-L form, and in the upper part, G, of said piece of Ametal is formed a valve-chamber, a, and from this chamber a to a point at or near the bottom of the well is formed a duct or passage, b. valve-chamber a next the pot is of conical form, so as to furnish a seat for a similarlyformed valve on the stem which plays therein, and an opening of less diameter than the chamber is made from the valve-seat into the pot for the rear part of the valve-stem to work in, as will be presently described.

I is the nipple, formed as shown in the drawings. It has a slightly-tapered hole, c, bored into it to near its point, and from thence a small hole, e, for the metal to pass out of, leaving a shoulder at t' of. square or nearly square form.

J is a self-acting valve and stem furnished with a conical button or valve, n, which has its seat in the end of the Valve-chamber. Behind the button is a stem, m, which lits loosely in the opening o, so as to allow the metal to pass in between the said stem and opening. In front ofthe button n is a rod, r, which projects into the nipple I, and the end of said rod is square, or nearly so, to t against the square shoulderi in the nipple when it is driven forward by the action of the plunger. The diS- tance between the button n and the end of the rod or wire r is less than that between the valve-seat and shoulder i, so that as the valve and stem are driven through the valve-cham ber it shall open one passage and close the other, and vice versa.

The valve may be said to Iioat in the fluid metal uncontrolled by anything but the iniiow and outflow of the metal by the action of the pump. A small delicate spring is attached to the stem m, not to effect it against the flow of metal, but simply to protect the valve from opening by a jar of any kind. lVhen the plunger is raised, the metal passes in between mand o, and, driving the valve and stem forward, closes the exit c and allows the metal to descend through the duct b into the well. When The end of thelowered, the button n is driven back against In combination with the nipple, the selfits seat, closing the inlet and opening the exit acting valve and stopper, made and operating at e, and so on. substantially in the manner and for the pur- Hzwing thus fully described the nature of pose set forth.

my invention, I would state that I am aware 1 that a stopper operated by machinery has EDWARD PELOUZE, JR. been used in connection with the nipple of type-casting machines. This I do not claim; l Witnesses:

but A. B. STOUGHTON,

' THos. H. UPPERMAN.

-What I do claim'as new, and desire to secure by Letters Patent, is 

